Even though they are living, moving cells, why can't they become a single life form? —This is a question that touches on the ...

Scientists have developed a method to temporarily halt the production of sperm cells without damaging surrounding tissues, an advance that could lead to a safe, long-acting and reversible male ...

Add Yahoo as a preferred source to see more of our stories on Google. (Francesco Carta fotografo/Moment/Getty Images) The last time a male contraceptive was approved for use in the United States was ...

"One day, men might be able to receive a small molecule that would deplete sperm but be reversible," Jain said. Researchers have long understood that cell connectivity via intercellular bridges is ...

For many couples facing infertility, medicine offers a range of solutions. But for men with non-obstructive azoospermia (NOA)—a genetic condition where sperm production stalls—options remain limited.

Researchers have found that targeted delivery of messenger RNA (mRNA) can restore sperm production and fertility in genetically infertile male mice. The findings, published today in Stem Cell Reports, ...

Individual-cell imaging, super intelligence and sire tracking are bringing a new level of detail to semen evaluation at Iowa ...

A young man left with no sperm after chemotherapy has undergone the UK’s first testicular tissue transplant in Edinburgh.